<template>
    <div class="app">
        <h2>我是 App 组件 {{ x }}</h2>
        <Child />
        <hello></hello>
    </div>
</template>

<script setup lang="ts" name="App">
import Child from './Child.vue';
</script>

<style>
.app {
    background-color: skyblue;
    border-radius: 10px;
    padding: 10px;
    box-shadow: 0 0 10px;
}
</style>